Rigid Foam Has A Range Of R-Values Rigid foam, or foam board insulation, is another popular option for the garage. The sheets' thickness varies between 1/2 inch to 4 inches thick, which gives the ...

Insulation keeps the interior warm and dry ... So if your shed, like ours, is in the middle of the forest, you might want to consider rigid foam sheets instead. They're easy to cut to fit inside the ...